Carpet-renovator.



No 744,437. PATENTED 110v 17, 1903.7

- J. s. THURMAN.

CARPET RBNOVATOB. I v LPPLIUATIOF FILED NOV. 25, 1901.

N0 MODEL.

UNITED STATES Patented November 1'7, 1903.

PATENT OFFICE.

CARPET-RENOVATO'R.

SPECIFICATION forming part of Letters Patent No. 744,437, dated November17, 1903.

Application filed November 25, 1901. Serial No. 83,556. (No model.)

To all whom, it may concern:

Be it known that I, JOHN S. THURMAN, a citizen of the United States,residing at the city of St. Louis, State of Missouri, have invented acertain new and useful Improvement in Carpet-Renovators, of which thefollowing is a full, clear, and exact description, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, forming part ofthis specification, in which- Figure 1 is'a side elevational View of myimproved carpet-renovator. tical sectional view through the same, thedust-arresting bag being removed. Fig. 3 is a detail View of theremovable nozzle-casting, and Fig. 4 is a detail view of the Washerwhich determines the width of the blast-nozzle.

This invention relates to a new and useful improvement incarpet-renovators, the object being to simplify the construction ofdevices of this character whereby they may be quickly and readilyassembled for use, are cheap to manufacture, and are durable in service.

With these objects in view the invention consists in the construction,arrangement, and combination of the several parts, all as willhereinafter be described and afterward pointed out in the claims.

In the drawings, 1 indicates the front wall of a casing, 2 the sidewalls, and 3 an inclined back wall which extends downwardly nearly tothe lower edges of the side walls and thence forwardly and upwardly, asat 4, parallel with the front wall, but terminating short of the upperedges of the side walls. These front, side, and back walls are providedwith outwardly-extending flanges 5 at their upper edges, and the backwall is formed with a vertical seat 6 at its upper edge under theflange, thus providing a uniform seat vertically disposed on all sidesof the casing, whereby the mouth of a dust-arresting'bag 7 may besecured in position under said flanges. The bag '7 has at the margin ofits mouth a tape or band 7, which embraces the casing at a pointdirectly below the flanges thereof, thus securing the bag in place. Thisdustarresting bag extends upwardly and has its top supported by a rod 8,mounted in a suitable socket-clamp 9, attached to a handle 10.

Fig. 2 is a ver- This handle 10 is in the form of a pipe and provides apassage for the compressed air to the renovator, said handle having ahandheld 11 at its outer end containing a controlling-valve operated bya handle 12, whereby the amount of pressure admitted to the renovatormay be regulated. A flexible supplypipe 13 is attached to this handle,said su pplypipe leading from any suitable source of compressed-airsupply. v

14 indicates a valve which is hinged to the upper inner edge of thefront wall and whose free end rests upon the upper edge of the extension4 of the back wall. This valve closes the passage between the saidextension and said front wall, and when the valve is raised by the dustladen air passing upwardly through said passage the valve will directthe air inwardly and downwardly into the chamber formed by the sidewalls and the inclined back wall and its extension. The dust-laden airhere becomes relieved of its heavier particles, depositing them in thechamber, after which the air passes upwardly into the dustarres'ting bagand escapes through the meshes of said bag, the fine particles of dustcarried by the air being arrested on the walls of the bag.

The lower end of the supply-pipe or handle 10 is received into a boss15, extending upwardly and outwardly from a removable casting 16. Thiscasting is designed to be fitted against the inclined rear wall and ispreferably secured in position by suitable screws. The inner face of thecasting as well as the outer face of the inclined rear wall are finishedto fit snugly to each other, so far as marginal contact is concerned;but the space at the center is open and in communication with the pipe10. Casting 16 is also made adj ustable to and from the casing. toregulate the thickness of the nozzle-slot. This casting 16 and thecasing proper are preferably formed with runners l7 and 18,respectively,

so as to contact with the carpet or other article being renovated andprevent the air from escaping from under the edges to the exterior. Theair admitted through the pipe 10 to the space between the rear wall andthe casting 16 escapes at an angle downwardly and forwardly, so as topass into and through the carpet to drive the dust in the carpet up intothe passage between the front wall and the extension of the inclinedrear wall beyond the valve and into the casing. In order to provide thisblast-nozzle, I arrange a thin washer 19 between the casting and therear wall of the casing, said washer extending on three sides thereof,being omitted at thelower side, where the air passes out in the form ofan elongated blast. I have found that a slot of one one-hundredth of aninch in width is sufficient for ordinary circumstances, and consequentlythe washer referred to may be composed of a piece of thin paper outappropriately. Where it is desired to increase the thickness of theslot, a thicker piece of paper may be used, or two or more washers maybe employed. It will be noted that the casting behind the blast-nozzle,formed with a flat shoe 20, contacts with the carpet, but that the spacein front of the nozzle is open to the forward passage of the dust-ladenair. Thus the dust is driven forwardly up into and through said space.The front wall is formed with an enlarged lower end 21, which hasconsiderable surface area contacting with the carpet, said enlargementbeing in the nature of a skimming-shoe directing the dust-laden airupwardly into the passage referred to.

I am aware that many minor changes in the construction, arrangement, andcombination of the several parts of my device can be made andsubstituted for those herein shown and described without in the leastdeparting from the nature and principle of my invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent of the United States, is

1. In a carpetrenovator, the combination with a casing whose rear wallforms one portion of a blast-nozzle, of an adjustable portion formingthe other part of said blast-nozzle, a dust-arresting bag, and means forsecuring said bag to said casing; substantially as described. 7

2. In a carpet-renovator, the combination with a casing formed with aninclined rear wall, of a casting secured in position upon said rearwall, and a washer for determining the width of the nozzle-openingbetween the lower edge of said rear wall and the adjustable portion;substantially as described.

3. In a carpet-renovator, a casing, one wall of which is adapted toserve as one portion of a separable blast-nozzle, and a removable membersecured thereto adapted to form the remaining portion of said nozzle;substantially as described.

4. In a carpet-renovator, the combination with a casing formed with aninclined rear wall extending upwardly and forwardly, the

lower edge of said wall being located above the lower edges of the sidewalls, a removable casting secured in position to said inclined rearwall,the lower edges of said casting being on the same plane as thelower edges of said side walls, and means for adjusting said removablecasting; substantially as described.

5. In a carpet-renovator, the combination with a casing composed of afront wall formed with an enlarged skimming-shoe at its lower edge, sidewalls, an inclined back wall which is provided with a forward and upwardextension, a removable casting secured in position against said inclinedback wall, and a washer for adjusting said casting from the back walland determining the width of the nozzle-opening; substantially asdescribed.

6. In a carpet-renovator, the combination with an inclined back wall,ofa casting having means for the attachment of a pressuresupply pipe,said casting being provided with runners, and a washer extending aroundthe three sides of said casting and interposed therebetween and saidinclined back wall; substantially as described.

7. In a carpet-renovator, the combination with a casing formed with aninclined back wall, of a casting 16 provided with a hollow boss 15, saidcasting having runners 17 and a flat shoe 20, a washer 19, and means forsecuring said casting in position against the inclined back wall;substantially as described.

8. In a carpet-renovator, the combination with a casing formed with amarginal flange at its upper edge, of a dust-arresting bag socured oversaid flange, an adjust-able nozzlecasting secured to the back wall ofthe casing, means for adjusting said casting and determining the widthof the slot which forms a nozzle, a threaded boss on said casting, apipe secured in posit-ion in said boss, 3. handle at the outer end ofsaid pipe, a flexible supply-pipe connected to said handle, and abracket on said pipe for supportingthe dustarresting bag in position;substantially as described.

In testimony whereof I hereunto afiix my signature, in the presence oftwo witnesses, this 21st day of November, 1901.

JOHN S. 'lHURMAN.

Witnesses:

GEORGE BAKEWELL, RALPH KALISH.

ICC

